I'm pretty sure target=_blank is what you want. But your iFrame idea seems
to work as well. Either way, it's important not to use <a href=...> on a
page you don't want to rewrite.
On Tue, Apr 16, 2013 at 10:46 PM, Shane Ó Conchúir <spiderb...@gmail.com>wrote:
> Hi,
>
> Sorry, I should have been clearer above. The webpage displays information
> about protein structures. There are links to download PyMOL sessions, PDB
> files, PDF files etc. so the user can open the files locally. The behavior
> I want is that a user can *left-click* on a link to open a 'Save to'
> dialog. The webpage also has a JSmol applet which can be used to view the
> structures inside the page. The files to be downloaded are not meant to be
> used by the JSmol applet.
> > Q: what if you use <a target=_blank href=?.....>
>
> This is a very good point. I think that will open a separate tab/window (I
> can test this tomorrow) which interrupts the user's interaction with
> the webpage which is why I did not take this approach. Therefore, my
> problem is particular to this concern.
> > Q: What is the purpose of this link? You say this reloads the whole
> page? Why do you want to do that?
>
> The purpose of the links are to download the PSE, PDB, etc. files. I do
> not wish to reload the page which is why I omit the target and set the
> content disposition to 'attachment'. This seems to avoid a page reload from
> the user's perspective - the behavior is as if they had right-clicked a
> link to the file and chosen to save it to disk - however I suspect that a
> page reload event is triggered which probably calls the garbage collector.
>
> > Q: Prints this where? How?
> > I'm not familiar with using attachment with page loads. I think it just
> destroys the applet. Any page load would be disastrous for an applet of any
> kind.
> > Q: Can't you avoid a page download?
>
> This file is 'printed' to the user's browser as a HTTP response. 'printed'
> is probably the wrong term to use.
> From the user's perspective, no page reload happens but I suspect that
> behind the scenes, some event is triggered which kills the JSmol applet -
> and would probably kill any other applet as you say.
>
> One way to avoid a page load is to open a new tab/window as you suggest
> above. This would probably fix the problem but would make the interface
> less user-friendly as they would then have to close the tab. I could have
> the tab auto-close but then there could be a brief interruption. The iframe
> solution behaves nicely.
> > Q: Why not just load the file using JSmol's functions and AJAX?
>
> I was not clear about this in my previous email. The downloadable files
> are not meant to be loaded into JSmol.
>
> In summary, I am doing something particular where I wish to avoid opening
> new tabs/windows when a user tries to download a file but do so without
> breaking applets on the page. One solution to this is using the iframe
> approach in my first email but there may be better approaches.
>
> Thanks,
> Shane
>
>
> On Tue, Apr 16, 2013 at 7:56 PM, Robert Hanson <hans...@stolaf.edu> wrote:
>
>> what if you use
>>
>> <a target=_blank href=?.....>
>>
>> ?
>>
>>
>>
>>
>> On Tue, Apr 16, 2013 at 9:50 PM, Robert Hanson <hans...@stolaf.edu>wrote:
>>
>>>
>>>
>>>
>>> On Tue, Apr 16, 2013 at 9:02 PM, Shane Ó Conchúir
>>> <spiderb...@gmail.com>wrote:
>>>
>>>> Hi all,
>>>>
>>>> I hit a problem where opening a link on my page which triggers a file
>>>> download breaks the JSmol applet (jsmol-13.1.14b) in Chrome
>>>> 23.0.1271.95 under Linux Mint 13 (Maya). I do not know whether this
>>>> problem exists on other platforms/browsers. I also have a solution which
>>>> works for me (below) but thought I would share the problem in case this is
>>>> something the devs wish to look into and also to share the solution for
>>>> anyone hitting the same problem. Also, someone may point out if there is a
>>>> simpler fix to mine below / that I was doing something silly :-).
>>>>
>>>> I'm doing the following
>>>>
>>>> - The page has links to download files from the database. The links
>>>> have the form
>>>> <a href='?query=downloadfile&ID=6&download=gz'>...</a>
>>>>
>>>
>>> Q: What is the purpose of this link? You say this reloads the whole
>>> page? Why do you want to do that?
>>>
>>>
>>>> Clicking on a link causes a page reload which reads the file from
>>>> the database and prints the following:
>>>>
>>>
>>> Q: Prints this where? How?
>>>
>>>
>>>
>>>> Content-Type: application/x-gzip
>>>> Content-Disposition: attachment; filename="somefilename"
>>>> Content-Length: somelength
>>>>
>>>> [contents of file]
>>>>
>>>> Because the new page is an attachment, the page does not visibly reload
>>>> so the user gets the usual file download dialog. However, the page load
>>>> breaks the JSmol applet, maybe due to garbage collection.
>>>>
>>>
>>> I'm not familiar with using attachment with page loads. I think it just
>>> destroys the applet. Any page load would be disastrous for an applet of any
>>> kind.
>>>
>>> Q: Can't you avoid a page download?
>>>
>>>
>>>
>>>>
>>>> My solution to this was to use an iframe. First, I replaced the links
>>>> with ones as follows:
>>>> <a id='PSELink-6' href=''>...</a>
>>>> Then I include the following in $(document).ready:
>>>> $('[id^="PSELink-"]').click(function() {
>>>> this_id = $(this).attr('id');
>>>> ID = parseInt(this_id.split('-')[1]);
>>>> var iframe = document.createElement("iframe");
>>>> iframe.src = '
>>>> http://my.server.com/mywebpage.py?query=downloadfile&ID=<http://my.server.com/mywebpage.py?query=downloadfile&ID=>'
>>>> + ID + '&download=gz';
>>>> iframe.style.display = "none";
>>>> document.body.appendChild(iframe);
>>>> return false; // prevent page reload
>>>> });
>>>>
>>>> Clicking on the link still triggers a file download but (I'm guessing
>>>> since the page does not reload) the JSmol applet continues to function.
>>>>
>>>>
>>> Q: Why not just load the file using JSmol's functions and AJAX?
>>>
>>>
>>>
>>>> Regards,
>>>> Shane
>>>>
>>>>
>>>>
>>>> ------------------------------------------------------------------------------
>>>> Precog is a next-generation analytics platform capable of advanced
>>>> analytics on semi-structured data. The platform includes APIs for
>>>> building
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>>>> _______________________________________________
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>>>>
>>>>
>>>
>>>
>>> --
>>> Robert M. Hanson
>>> Larson-Anderson Professor of Chemistry
>>> Chair, Chemistry Department
>>> St. Olaf College
>>> Northfield, MN
>>> http://www.stolaf.edu/people/hansonr
>>>
>>>
>>> If nature does not answer first what we want,
>>> it is better to take what answer we get.
>>>
>>> -- Josiah Willard Gibbs, Lecture XXX, Monday, February 5, 1900
>>>
>>>
>>
>>
>> --
>> Robert M. Hanson
>> Larson-Anderson Professor of Chemistry
>> Chair, Chemistry Department
>> St. Olaf College
>> Northfield, MN
>> http://www.stolaf.edu/people/hansonr
>>
>>
>> If nature does not answer first what we want,
>> it is better to take what answer we get.
>>
>> -- Josiah Willard Gibbs, Lecture XXX, Monday, February 5, 1900
>>
>>
>>
>> ------------------------------------------------------------------------------
>> Precog is a next-generation analytics platform capable of advanced
>> analytics on semi-structured data. The platform includes APIs for building
>> apps and a phenomenal toolset for data science. Developers can use
>> our toolset for easy data analysis & visualization. Get a free account!
>> http://www2.precog.com/precogplatform/slashdotnewsletter
>> _______________________________________________
>> Jmol-developers mailing list
>> Jmol-developers@lists.sourceforge.net
>> https://lists.sourceforge.net/lists/listinfo/jmol-developers
>>
>>
>
>
> ------------------------------------------------------------------------------
> Precog is a next-generation analytics platform capable of advanced
> analytics on semi-structured data. The platform includes APIs for building
> apps and a phenomenal toolset for data science. Developers can use
> our toolset for easy data analysis & visualization. Get a free account!
> http://www2.precog.com/precogplatform/slashdotnewsletter
> _______________________________________________
> Jmol-developers mailing list
> Jmol-developers@lists.sourceforge.net
> https://lists.sourceforge.net/lists/listinfo/jmol-developers
>
>
--
Robert M. Hanson
Larson-Anderson Professor of Chemistry
Chair, Chemistry Department
St. Olaf College
Northfield, MN
http://www.stolaf.edu/people/hansonr
If nature does not answer first what we want,
it is better to take what answer we get.
-- Josiah Willard Gibbs, Lecture XXX, Monday, February 5, 1900
------------------------------------------------------------------------------
Precog is a next-generation analytics platform capable of advanced
analytics on semi-structured data. The platform includes APIs for building
apps and a phenomenal toolset for data science. Developers can use
our toolset for easy data analysis & visualization. Get a free account!
http://www2.precog.com/precogplatform/slashdotnewsletter
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